Hi You seem to be having chronic intermittent urticaria. In this condition there may be recurring itching and associated wheal or hives all over the body. This condition may be associated with underlying thyroid dysfunction or infection etc. However in most cases there is no need for alarm treatment is mostly symptomatic with antihistamines . Please continue antihistamines tablets as they have no or minimum side effects. It takes time for the condition to resolve but in most people it resolves by itself.